Longfin pike
| Longfin pike | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Longfin pike ( Dinolestes lewini ) |
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| Systematics | ||||||||||||
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| Scientific name of the family | ||||||||||||
| Dinolestidae | ||||||||||||
| Scott , 1962 | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Dinolestes | ||||||||||||
| Klunzinger , 1872 | ||||||||||||
| Scientific name of the species | ||||||||||||
| Dinolestes lewini | ||||||||||||
| ( Griffith & Smith , 1834) |
The long- fin pike ( Dinolestes lewini ) is a predatory fish from the group of perch relatives (Percomorphaceae) that lives in small schools . The fish live neritically in bays and over rocky reefs on the coast of southern Australia , north to New South Wales at depths of 5 to 65 meters. The species is monotypical in the genus Dinolestes and the family Dinolestidae.
features
The fish have a pike-like elongated body, the maximum length given is 50 to 84 centimeters. The scaling consists of cycloid scales and extends to the head and base of the pelvic fins . The lateral line organ extends to the caudal fin . The number of scales along the lateral line organ is 64 to 67. The spine has a total of 27 vertebrae, 10 of them in front of the anus. Both dorsal fins are far apart. The small first is supported by four to five hard rays, the second by one hard and 18 to 19 soft rays. The anal fin is symmetrically opposite the second dorsal fin and is only slightly longer. It has one hard and 26 soft rays.
There are some enlarged fangs in the mouth. The palatine bone (palatinum) and ploughshare (vomer) are also dentate.
Systematics
The long-fin pike was first scientifically described in 1834 by the British naturalists Edward Griffith and Charles Hamilton Smith and assigned to the pike ( Esox ). In 1872 the German zoologist Carl Benjamin Klunzinger introduced the genus Dinolestes , with the longfin pike as the only species, and in 1962 Tevor D. Scott introduced the species and genus into the family Dinolestidae. Like many other fish families whose relationship could not be determined, the family Dinolestidae was assigned to the perch-like (Perciformes) for a long time . Also the fish systematist Ricardo Betancur-R and his colleagues could not determine any closer relationships for the Dinolestidae in their comprehensive revision of the systematics of the bony fish and assigned the family with the addition incertae sedis (“insecure seat”) to the perch relatives (Percomorphacea). W. Leo Smith and his team finally found in a paper published in October 2018 that the long-fin pike belongs to a species-rich clade of perch relatives, to which they gave the ordinal name Acropomatiformes. The composition of the Acropomatiformes corresponds to the Pempheriformes of Betancur-R et al.
Individual evidence
- ^ A b Joseph S. Nelson, Terry C. Grande, Mark VH Wilson: Fishes of the World. Wiley, Hoboken, New Jersey, 2016, ISBN 978-1118342336
- ↑ Ghedotti, MJ, Gruber, JN, Barton, RW, Davis, MP & Smith, WL (2018): Morphology and evolution of bioluminescent organs in the glowbellies (Percomorpha: Acropomatidae) with comments on the taxonomy and phylogeny of Acropomatiformes. Journal of Morphology, October 2018, doi: 10.1002 / jmor.20894
- ↑ Ricardo Betancur-R, Edward O. Wiley, Gloria Arratia, Arturo Acero, Nicolas Bailly, Masaki Miya, Guillaume Lecointre and Guillermo Ortí: Phylogenetic classification of bony fishes . BMC Evolutionary Biology, BMC series - July 2017, DOI: 10.1186 / s12862-017-0958-3
Web links
- Longfin pike on Fishbase.org (English)
- Family Dinolestidae - Long-finned pike on Fishbase.org (English)
- Mark McGrouther: Longfin Pike, Dinolestes lewini (Griffith, 1834). Australian Museum, accessed July 8, 2013 .